Capacitor having features of heat dissipation and of energy conservation

Abstract

A capacitor that has the features of heat dissipation and energy conservation comprises a capacitor core, an aluminum shell surrounding the capacitor core, the aluminum shell is covered with rubber that completely covers the top of the capacitor core, then with the use of an extruding machine, the upper orifice of the aluminum shell is extruded and sealed up around the rubber completely; the outer surface of the aluminum is formed with an aluminum oxidized insulating layer after the aluminum shell is processed through an aluminum metal surface transformation treatment, since the aluminum shell is not covered with plastic film (or sleeve), heat dissipation is enhanced; in addition, since plastic film or sleeve is not used, no pollution is occurred, and hence more friendly to the environment; furthermore, since heat generation is low, energy is conserved.

1 . A capacitor that has the features of heat dissipation and of energy conservation comprises a winding unit as the core of capacitor, an aluminum shell surrounding the capacitor core, from which an anode lead and a cathode lead extended outward for electrical connection; characterized in that:
 the outer surface of the aluminum shell is formed with an aluminum oxide insulating layer after the shell is processed through an aluminum metal surface transformation treatment, since the aluminum shell is not covered with plastic film (or sleeve), heat dissipation is enhanced; in addition, since plastic film (or sleeve) is not used, thus no pollution is occurred, and therefore it is more friendly to the environmental; furthermore, since heat generation is low, energy is conserved.   
     
     
         2 . A capacitor that has the features of heat dissipation and of energy conservation as claimed in  claim 1 , whereas the insulating layer of said aluminum shell is located at the exterior surface of the aluminum shell. 
     
     
         3 . A capacitor that has the features of heat dissipation and of energy conservation as claimed in  claim 1 , whereas the insulating layer of said aluminum shell is located at the interior surface of the aluminum shell. 
     
     
         4 . A capacitor that has the features of heat dissipation and of energy conservation as claimed in  claim 1 , whereas a plurality of insulating layer of said aluminum shell are located at both the exterior surface and the interior surface of the aluminum shell. 
     
     
         5 . A capacitor that has the features of heat dissipation and of energy conservation as claimed in claim.  1 , whereas the thickness of the insulating layer of said aluminum shell is 1˜200 μm, while the thickness for best insulation is 10˜50 μm. 
     
     
         6 . A capacitor that has the features of heat dissipation and of energy conservation as claimed in  claim 1 , whereas the insulation layer of said aluminum shell is treated with anodic treatment, or soaking and staining treatment, or other surface transformation treatments. 
     
     
         7 . A capacitor that has the features of heat dissipation and of energy conservation as claimed in  claim 1 , whereas the form and shape of said capacitor may vary, it may be made as a Dip-type, or SMD type, or a liquid electrolytic capacitor, or capacitor of other forms and shapes. 
     
     
         8 . A capacitor that has the features of heat dissipation and of energy conservation as claimed in  claim 1 , whereas the thickness of the insulating layer of said capacitor may depends upon the voltage specification of the capacitor, therefore the capacitor with high voltage specification may use thicker insulating layer, while capacitor with low working voltage may use thinner insulating layer.